{
  "manageEntity": {
    "action": "Save",
    "entityId": "246655180",
    "entityType": "Track",
    "nonce": "0x1f248b92188c52295c2c6e7cee2419eeff6c941aab8c6d3e60b84e17197aa4ec",
    "signature": "0x1c94d966d769ab3434da714f153d689bacb607183780c7c1ff468150075e0c226703ee7361f422213b45f22980e8444a77aaaa88926fac44ebb4bed910fe7d291c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}