{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308259",
    "entityType": "User",
    "nonce": "0xfc5555e15f3d4b3aaa4b7579f826bedcce3181f95a62e5b549f75b2db7e6d65f",
    "signature": "0x604e60db188baab1b6904cbd5a09582e85dd404afb17ef0030ed4ca6a1d3a3745b0ca4eeb9f31d754e576743c360d93e506b54e5b4a49ab7df899948e694225d1c",
    "signer": "0xD55DC3bb788f477f695183900Fff41982fa8ecfF",
    "userId": "677613980"
  }
}