{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "641892598",
    "entityType": "User",
    "nonce": "0x3d9fbef73521028c87e0da770d2e5212432da73ad5d5401d336b9899b29d8fb1",
    "signature": "0xe38f1b9d741429f8370fe361177fb54110337b10b3ff7c572e1e729ad44af34e065bc922f64d2256eb47644d7fb82c334dad130d539ec3efb512a49356ede6c71c",
    "signer": "0x2B171214e998033E806F72301307B2160CD94DdB",
    "userId": "489165782"
  }
}