{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1882504",
    "entityType": "User",
    "nonce": "0xf9189c0b880c76e77912452c73eda99f1d534754cbeb285a8e8d8b933ec99d69",
    "signature": "0x7ce7928ac5f37ce41aae6b097c4edb68c0781ddf00feb45926a48c8a3c87f82218051887302ceca4033efb5a3ee1fbfd7fdd0f732e645978cd11b217c76c05f41c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}