{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "576538506",
    "entityType": "User",
    "nonce": "0xe1d68f07b256807b0d0b61f485b0922a266097f596a940c9f10fa6d4f72c3721",
    "signature": "0x2731d41893e74511dab67b5f919161a2b88248741bc5a214dbe0a22e44617e43142767a1e45a2cd909d3edf8344397a000c00f5a1a1c9540d6d4050520a2eca81b",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}