{
  "manageEntity": {
    "action": "Save",
    "entityId": "1785934933",
    "entityType": "Track",
    "nonce": "0x8363265b1e6568500f27b664f254e51550c4ba23dcae3636ae690d1f760fd6f4",
    "signature": "0x5d6e5cb3a8e7ed566008376229cbaa42dfb73633277de32b32d79e38336b2eb13828ec01b48ee4b63e061992807c7dc69fa576a7eee8ea00a07fe5db33ce23f01b",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}