{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "120328011",
    "entityType": "User",
    "nonce": "0x2319b224c0c79da2af59c86abe8dea1c24af2b5879fae1f77f7e6d1606fd43ff",
    "signature": "0xc04b5941e89552940a596c52abb1ce737669b0d750231b763321047a796ab0195d48bbaae79fbf606da9dd86a0fc84130affee030416673b52c62fe398390d601b",
    "signer": "0x3Ec98fFA47eF7773803b73964753B99Ae2D50f41",
    "userId": "545926315"
  }
}