{
  "manageEntity": {
    "action": "Save",
    "entityId": "1055401703",
    "entityType": "Track",
    "nonce": "0xf55c4853ea79fb385b9ff2d226cb2da0f1cc2f9680bb02db0b1df06936680fbd",
    "signature": "0x8bb2e0cfca2066da876d0259843ad6ba98b74e070415e5a2fdad74b074abcc802add78dad6f6561c088f2a016e5105ce15367e1607087d960ee9aad013c5d1cf1b",
    "signer": "0x102a924C1c076Dcb5816d20E32Dcb6F00e75F2C9",
    "userId": "485987672"
  }
}