{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4b871e3cb11532ca3b7068596fca6432915cfc1a0c6c91d12440b47d96747fd0",
    "signature": "0x2b403487f99701beab70bd7a621e1b90e85e2c65916add9b3e3343d9b76e518643ac171477f53ea1c6b2bcb25d60e536a0384700ec6ad63367d7a76b63397d411b",
    "signer": "0x4De48fE1b56fD037B5cb86AB17ca457Db6a575eD",
    "userId": "60008468"
  }
}