{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa93328b616f8696b290689532d53a01dd46ace871dd3ae5ef7cb180edff161fc",
    "signature": "0x624942fef1eb606d8ddf8cc703d41e8ad1eebd1112066582ff176f0a7fb345550f6a0dd48bb9e0e0154466c234e4eb80ffdbff759b71cba991a80c30b6a9df3c1b",
    "signer": "0xe84DAA2a7c71dCb83b533DaC2B3861299D9943cd",
    "userId": "870459809"
  }
}