{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0fb56177b9fe763a1d33fbfc91d69d481df7c042379402bef604f3283b60ff38",
    "signature": "0x3c4ad8f1ff4743379cdc695c33853b7e3f938b6f7d87c24faac8ad134a0e284b5b2e4af82c42be7c518a87004f8d84a57d977f42040f1cc1e6cac0a1642878611c",
    "signer": "0xA97e21FA42e7264Dc480723d34E6a61045474c60",
    "userId": "531144400"
  }
}