{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "637138972",
    "entityType": "User",
    "nonce": "0x42ccf05a547dda73480b304a353f6e3e9a247c1b3182d7610bd825688604b1e7",
    "signature": "0x3bce011a09838bbe5405744421991bcc9fa77e175f3a3ec817312ada51bb80272f10ac8a72655ded4fa6a11700022d763aa211f021cb3b6c0428a344fe235f211c",
    "signer": "0x6eB89863c4d58b9FA70D5030CF1D29f34f6f1a1F",
    "userId": "869753741"
  }
}