{
  "manageEntity": {
    "action": "Save",
    "entityId": "1153382603",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xd2e967cf895ae55cf23b2530a5e1a99aeadd0195cec7587283603e23c6b1eb7c",
    "signature": "0x52138f50c7fd8261297e4cbb5eb599eed972b57d8461fa337d45406203ccf8d4538835f00b9352c17fbdbfc53cf042ebc2cdef9d08c19a010c77ef8e277aee171b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}