{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "757958666",
    "entityType": "User",
    "nonce": "0x3f9f5b13bd726d711bdf2ac9e1174929674ac31a8a6ce68db7b83bdd606797df",
    "signature": "0x37dac39b1533290e077a815f28212373e574737edf74d239f9574a60366fd947432f30b8c9ad8bab7f28cf28f3a874279cc0b228a65d4e49ea93187cc82038191b",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}