{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "849776474",
    "entityType": "User",
    "nonce": "0x8153bacec9776abef7e0253e41d9e6781d0ea04c8b1096eff974727e54779b03",
    "signature": "0xb6943a95f34574da91a91d1ca30e3dee17a3dfd534c7c537316548733b6bd71b017fa4edf125578694f58d0aaa8481de34181ce4e02f2ba659884cebfc55ff581c",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}