{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "395640",
    "entityType": "User",
    "nonce": "0x512dd53ce819781e0354929e0aa225cc80d15c9024dbc601109a2affd6610f15",
    "signature": "0x96c5e822622a2b81633ec54d5cab8956545db33636e1c125d8af20ae12c63a47316f7fcfac1eb6956554e145931a7beb876a40b0bcae1bb2bb5384351f9e8a451b",
    "signer": "0xC965eCf215DC75172bD11e8E1dbE76EDd838886e",
    "userId": "260849"
  }
}