{
  "manageEntity": {
    "action": "Save",
    "entityId": "1365181829",
    "entityType": "Track",
    "nonce": "0x93247ed18d6f82a60a0928f76021c43c92201eaa49651d9c77bb1af36bfb777b",
    "signature": "0x2c613a73da6ec6e8b7505b9e16bdab6e7b7a077313887e5f803ca883428424270e05816f1d8b68e9bbd391d39f1edf26c9ba9d86f9c519298e69dd13cd168b4e1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}