{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x3d97310a91fbd0959c2722d3ee01fd17718fe3b2f1284fca9737eca9878d12d9",
    "signature": "0x5368da17e67bec81533df5f3689c18a4ceb561a0de0074a24f402e208881735023fc7147b82abcdccc296e4ac614104b4fee612fc55902cc9241bfbaaf0855261b",
    "signer": "0x07B2c029e5E8D2242Cd4B484125f6977573f3bC5",
    "userId": "662063117"
  }
}