{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57703",
    "entityType": "User",
    "nonce": "0x485c760086e4301738dc03ca6db799bd3333fe81c65b77a3062c5253c2f1a2b7",
    "signature": "0x381931a67877fa48d128eae5c85e676db94a56fc436df1f58d014e9748095e2103169e0e0936ab57fcaf7fdb1fa659a30388c8cf0ea88c20b865de4987780ef61b",
    "signer": "0x43dA66b40816c8fb9e2B0AA77E0643192169AF14",
    "userId": "636236864"
  }
}