{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "7609",
    "entityType": "User",
    "nonce": "0x11b381fcfb53e8f10f5e50a8b3f188f750a515b32fabd113d7cb0b2358f82ada",
    "signature": "0x317db672b4c0e92506ab7f9948cfcd1d68de23630a0ab791f2956fc1afaa4c312c185148b63819665f2384db0a52ba015e50eb2f5f6fe316fd1011f49f5ea2e01c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}