{
  "manageEntity": {
    "action": "Save",
    "entityId": "1356831652",
    "entityType": "Track",
    "nonce": "0x8d3bdda935535ac31c285710de0165f1a4dcaa39fb1f399c26a836b05ca34727",
    "signature": "0x67fbbb345cdcf4e34e7da028fbdf26a80e3cadc3b5a52c410435ae80db7bc92e5dd846d860a8ddadccd910923c2c9761339af4d26ead3a4175461d5cce4487551b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}