{
  "manageEntity": {
    "action": "Save",
    "entityId": "1784827159",
    "entityType": "Track",
    "nonce": "0x25c8b05d01ba290fb92050e1c82144e6bf948693fee84f0ea9accc72bd91f2cc",
    "signature": "0x8131f0e7b78bd01ff0ab707c0d31b875bbf5af8c2038346515103cd6395c49cb7d5f9b1043fbfce1213fccf4b0957708ccd54e5475d29b278771fdded6b6360f1c",
    "signer": "0x96F25BA81df0482778A947af84C03800CF5f5d64",
    "userId": "993166642"
  }
}