{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "299228",
    "entityType": "User",
    "nonce": "0x43afcf8cda41778d59b8cf5a97ee22c45f7787dbdebc88c9fe60736f0a1bf1dc",
    "signature": "0xe348eccc0383ee4a7f14ed460dab957efbfc6eed6349dfbcce5981a5a1a5aa6f03769d8855976420aa0fd458cd69fe61b0e66243f52df3dba6ec2d722c2a2fd01b",
    "signer": "0x5f669126A64334710E37f472BfBfE0D8cF408577",
    "userId": "171892"
  }
}