{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa258db50ed8a30e1caac8ff3eb5bc1ec7b3caf8d66515a382a1fd4a0c79c3043",
    "signature": "0x196764b2b0875e50c7ff624700b3b4747909762f5456264e76f12cb2bcef0acf3e7fea86c4b785bb98bcc2e917d4ae2191101566323f95a2473d00e1af83a3871b",
    "signer": "0x269D04011bff7235FfE8b5BD215D32b5a8B4D0EA",
    "userId": "313697609"
  }
}