{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "57703",
    "entityType": "User",
    "nonce": "0x0fbb63ed29f217ee3085668478ad1158aa47da713825b03b7077169eac83b06d",
    "signature": "0x55a8fee488a1b3d204df73522369a7b1c8eb9449f19cbb25f6397f24866652f3046337a7d83caa5d47f0c43d041c88d8473dfeadc926532993ece91856b62a181c",
    "signer": "0x712Aca9aA6ac07F98dcEC338Be9C15c3Dc47d569",
    "userId": "12730129"
  }
}