{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "152450",
    "entityType": "User",
    "nonce": "0x089bb6f4845979b80e46f3fadb2aa9dbe4cc4f7cb324ec8a36c26c234e9bd623",
    "signature": "0x09a0c763d3f9649a407a8262534a77f66fab851212abb5e49148d115b510e3126dfaa8fc2b9ba9497426ebe213006df2c4a72a5650b6a8763d0c9599d9f0b50c1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}