{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0xe57bb016aa3597cb211011ba4a0399c725097802327726b1d2fc32e104e8914b",
    "signature": "0x6a4f72b891a3a2ed770bcf6d4ff6f84e2ed35fd2e7323425f0aa8f84bd0ba7df221bf1a19b3ddd5593b36125b1ff9bd56afcc094573fbc7608c4244d5a834ee61b",
    "signer": "0xaddfe8a42a112B9e07190590DCa78C32CB396871",
    "userId": "380767039"
  }
}