{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44",
    "entityType": "User",
    "nonce": "0x3192b657eca0a67be38796174ba08fc6a86eca1d90a9c754b4961fddf44b4ec1",
    "signature": "0x279fe4c0ddff694e648f780ca0b92614ba6e1c551e0a4b6737632e3db23bf70d6e9848811836577ee791139e4af2cc618f0a45268320665797b44777efa979241c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}