{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200988",
    "entityType": "User",
    "nonce": "0x5fb1316289bca3eb76d0c0b054263e29bc37c7ef44d080731024dcf573720a7c",
    "signature": "0xdedd2eb88fef727b9b5184cfe5853e2e110e0bc6502a06760307d15237129d584cc6ec5d37fd2e8cd59b2e3eeef91edc43f631c36a63615c1dad77ed393ce8ba1b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}