{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x0fdeb42995c0006826adf51b4eeb740db4b6d9e809508de2305747924c7f28c4",
    "signature": "0xf45a79b2b3780744c32bbbe5e78d6b4de4f91092caa2db8edb718f418a03cdbd072fa3ee870edad529aba93c13ec1ca46e1d1540e8fb2602cc28efa2034853331c",
    "signer": "0xE7c5B65B708a4B3A6F3340Cf03c31929Bc6e8e28",
    "userId": "205876401"
  }
}