{
  "manageEntity": {
    "action": "Unrepost",
    "entityId": "819850548",
    "entityType": "Track",
    "nonce": "0x10b815f2b50b4e35ff54537c27e5c3f56a1dcfe1584d4253012e97614b934dbd",
    "signature": "0x86909df82770c6bc0b8a5c187aec94e5f7350ff89fb4ad08227cbd474eef55cc6d4ae8a63a6923dbaec6a5f2a19ed6fb19f8cadb91fbd658ebbf2282203b472e1b",
    "signer": "0xaaD43a86a543BBc8e33EBCe7c317F27Ce4b81beD",
    "userId": "643832687"
  }
}