{
  "manageEntity": {
    "action": "Save",
    "entityId": "2034855005",
    "entityType": "Track",
    "nonce": "0xeb8524d1bb172f7b955e7db32d75c96752cb9835787e3f40003a1397befe70c7",
    "signature": "0xeb95ff1a1e19911e45771b1c6e41897d2ef4ead7021c905468359d965454fc4a0fd1260cb865e4be514c3f387e75566d56bb9e786937bf30729d340559f86bb71b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}