{
  "manageEntity": {
    "action": "Save",
    "entityId": "760811995",
    "entityType": "Track",
    "nonce": "0xa7824bda72719e97854f2a1462b6215480cb7567b8f90e90d8c9056d14ced291",
    "signature": "0xa3a865d81ae1804733ff3d4928789ed50a03da16ffe41c513f4b5da45ec073fd1da2f247b9f7ae32ba5ab14009543b0d00be991d1d859acc8e3b0fb0f6ec740f1b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}