{
  "manageEntity": {
    "action": "Save",
    "entityId": "2006691644",
    "entityType": "Track",
    "nonce": "0xa5f7daa79bc7b999707cad9c7c3a099928b26da538bebc33bcf942e3a4caa6ae",
    "signature": "0x477169cdfe04898aa1060c345a3519e795038a2963e63e7bc4a3b3153c6276955bcbe0dda1416834c32ba989429d18bfaf2a9ce46ca3f776bfac354d9ea9e9dc1c",
    "signer": "0x4086Dda2D91F77cd46De0859a4de37F888508faA",
    "userId": "568518925"
  }
}