{
  "manageEntity": {
    "action": "Save",
    "entityId": "827238146",
    "entityType": "Track",
    "nonce": "0x3a0a00ca39fa6a0a19a23ade9ec302a4b0dc362e51298ee45fd2a6d6c1a8abef",
    "signature": "0xed1998452ac8f9ba08925817c8cb93381065d0fffdaf6a3a6d5957f86a4eae02383e1ddc644a8cdc3960671ec4179517a188559d9d868becebeb29fbe6afb7601c",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}