{
  "manageEntity": {
    "action": "Save",
    "entityId": "2132486928",
    "entityType": "Track",
    "nonce": "0x8e4c4c966f1f5cbd36469fd75c8532cc2b24c2b181494445fd449f4ed041d865",
    "signature": "0xe01ab288e13a36dce65952f4021078b8f01977e62ba71829a0c0565dbfa49b2d6bf3a4fb4e6678bbed66b3e583e4693181bfb4c0ad992eb90d36540dff53a4c41c",
    "signer": "0xc732abD40749026D35a8f4162a803dAAf665371e",
    "userId": "496394700"
  }
}