{
  "manageEntity": {
    "action": "Save",
    "entityId": "1202800213",
    "entityType": "Track",
    "nonce": "0xd57d8fe80b222f15b560f7c7f50cbc32406df0727bac6081e594c851115497e4",
    "signature": "0x8cf6fdb7a9d904faaf7e7864d401c6d1ff9e6f0d804d4832b403dfe64539e6416382534984c7a053d1ea0708ae7a53b912547aa4d312ab1dfdcf9a6f60b571f01c",
    "signer": "0x0b901AE3Eb7b439095858D82Ff194CfeD0Fd3396",
    "userId": "167557"
  }
}