{
  "manageEntity": {
    "action": "Save",
    "entityId": "1295670091",
    "entityType": "Track",
    "nonce": "0x7703d9c4deab19fa08365ae4771ecf2dbec074a31800fed9e609b5fc5c0c2cfd",
    "signature": "0x70af36fbec9241d883e7a1b8f97b4468c496a214cf89b86cd3d73ea7a70fc0235d16db7f86bf37a0f52383290db6cb67ed177f144d58b9ce0c795f2a303e73081c",
    "signer": "0x19EDB4c1a8740c323f6e57B80F3422C01875289e",
    "userId": "390804"
  }
}