{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "157919",
    "entityType": "User",
    "nonce": "0xb965c2ff6c81cdcc28564ed3bbcdcf4d5012d7d242b454869f7ead394eb4751b",
    "signature": "0xb9c965b2fd5171f09aa1a801969eaf28759f19fb8fb42a67f5851e0687961aa3648e27c0ca4250acdbd4c379c11637510518a70ed5ba1fffb93a7026a23a68661b",
    "signer": "0x6B239e9B75f27b519de7Bad3a26a0b7d30e32D3f",
    "userId": "311257477"
  }
}