{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "386245473",
    "entityType": "User",
    "nonce": "0x87b7732005268695ca09e91628ea00c544bab3bcd077b4b34a60052c806d24f3",
    "signature": "0x3d4d0d2eb9eab9a61d257865e3bec7320244f1b8979340bb084bd7d744a69bc034b720a4ffa07b194190719b8d71bbda77796183abdadc5816d2ede057c832241c",
    "signer": "0xd489B786708CDd8661b152CFF27695dC12c8c0C9",
    "userId": "647391197"
  }
}