{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863739",
    "entityType": "User",
    "nonce": "0xa1d1fd080c85cd9f0736317fc1923c4f4ea93b52cd6ad9e862836021a898662e",
    "signature": "0xdb42f28d4bda32f83a89515d3b382f3718f035da40af8c8228bb483fe3208afc1fa8744490628137a915a9b985a0b0e53c6e01251068f09ae189b368853501a41c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}