{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7826dffeef53751daf6ee55c8c5c261533c963e56acbadffe014d5fda0364372",
    "signature": "0x6b0bf3a6438511d256bc356ff8569ffde5afacdc3227985766185a1622791be231f7d6ea403617aab4cb844e04f75cd9c4cb7f6267ee08a85835d902dd54ad2b1b",
    "signer": "0xE4B37954BBC4913DD93D369891E17e93AFCd6EC7",
    "userId": "240450961"
  }
}