{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x83c422a20d644836043ed6a10beb1c3e7fe207ca0e7a7808fe42ba33cb10bd09",
    "signature": "0xd75179b928a42ad952fe99c1dfdab476221cf052a100482626921126d8d4d58a17c9bdfdd795f24f4dfe8cb37da4151ab6105e8bbc9f81f0bb9bfb7c73d04f001c",
    "signer": "0x91f87F441e29d794CF4d66C2eA62679B31096FE8",
    "userId": "651327409"
  }
}