{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x66cf571acb7bf8975d40c1fc3dcc1401b5ffb76ddf033fa095b2f54f019ef8ab",
    "signature": "0x6773571569f60049c929880d13a914304ab916541148a1b1a6aa1f37ef84132651955949c1d4a9dba0f3494d734e258910b536d5a5a127c360c0a00734998c911c",
    "signer": "0xC4e201BEaDD3933E76e562c99f9F367Ced3f68d7",
    "userId": "533673360"
  }
}