{
  "manageEntity": {
    "action": "Save",
    "entityId": "1752181087",
    "entityType": "Track",
    "nonce": "0x9bbd4c4a46c42cc7cefb3f28deaba211176273582dbc56397381158198d3ae7d",
    "signature": "0x9f564734390aeeeff6642d1078467fb9419fb6ee7cdb4907d537d6a58d3dc0ea4a3fec46a9f33c0aebc926c117c38e421b414e5ec3a52c039e4aca461f1d23e31c",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}