{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc16d602caed714baca6d2c373ef140ac28c0e610b58c85031a6242bd4c06a8e8",
    "signature": "0x20e21248222a631df29ac5413b8b25bfe8ae2b661f0a38fd6a272af786d632f126f050379a8395ab04cbee9769eb8f50883d48651cadda2147fd16fd0717e1c51b",
    "signer": "0x8d3400c74727Fe9b72568d67b9319C1836a145Ed",
    "userId": "508004404"
  }
}