{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0x3f6f39170312c009d5f114b4fdd86bdca0766a8935c61c58ef63cd0000c13be2",
    "signature": "0xc37f50f3a627f743c8aa5b7f9af95d05174a18d8d49b28a9be742c3fd1fa917d117f783221625c39b959d5de689c89256b00827eef891964aab24d7c9c5010771c",
    "signer": "0xc8b59C26109BC380ABC47eBad3DF1FB7d6aBf13C",
    "userId": "37821039"
  }
}