{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57937",
    "entityType": "User",
    "nonce": "0x799dfdd07e37e54643874222cd40822ad68faf1d9e671329c534fdfcc8b91c31",
    "signature": "0x3f6b1582eb56f62e05caaa689173c63a08c15ec883e23ad29183c3994d569a566062fc56a21cd71867e83ef687f5e40cd99969254093047fe3185a8d806b2bfb1b",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}