{
  "manageEntity": {
    "action": "Save",
    "entityId": "788782879",
    "entityType": "Track",
    "nonce": "0xb5da105102eb4aab27169db22a8c03511bbed763d785103102f681de591edf0a",
    "signature": "0xbb138a81683c5f49188477649f47dc248eed0705a74451670c754737623eebec4502e2399d131f5965a2ac8cc44737c9ad765b0f1e307f2797f1a4631e07c0c91c",
    "signer": "0x0fe82f565AaE260D57b8e691c61Fb05fE83B6F81",
    "userId": "614212580"
  }
}