{
  "manageEntity": {
    "action": "Save",
    "entityId": "1980320032",
    "entityType": "Track",
    "nonce": "0xf57a14456cef3fa6db81a119779c165543d1052fc15e526c2e0db91f2a3d6bbc",
    "signature": "0x898aced4d31ec0d16cb010bf8ea4e667eee071d3e75fcef535d228ed1dbc0d5759a6623535d211162294a99637f18214ac1350e371dab9614996ad35e43bb0bc1b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}