{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1988",
    "entityType": "User",
    "nonce": "0xe7ec754105dd52ca458ad86d75343eadc75b124a937f719d26f33ece4c50b873",
    "signature": "0xc073b9c35aa6dc5b44273ebb10fbcff93a48f4b124cd7a91e9ae16951c37be26636f093764a382819b01ee2602f15f3c16b53290a34da38bf44e456796a86b2c1b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}