{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd2cd0f8b7d0b653a25591310903cf50da2dca2f7a5cbd517164b852519edf966",
    "signature": "0xe70250e4ff9f86a88704944445d6bb0e3dc884af55c26cea9bec77d062db5e7f633d2cc4ba1255ff43b200e9b736ca61fef0375b5b5e716e6d6032e5cdf8e91d1c",
    "signer": "0x56ef43552A6856B68086824B4D604c27ff6040B5",
    "userId": "336915550"
  }
}