{
  "manageEntity": {
    "action": "Save",
    "entityId": "1294279867",
    "entityType": "Track",
    "nonce": "0x22d81f33b33b4167edd9845a2e7454b561bd09479bdf88d77cded8dc469fe672",
    "signature": "0x71ce84b05b0ced5b243babfe900d809e74e487e4460a97cce6c1f950e37ad09c12300b0af5ca6a4b3477a31aabfb1a477a8357eed73bb817e3c61811e2e6fa651b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}