{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x4d2fff67e3ab9fbc85fea097f4a561b5a080bc4871241e83bfc52ce27cfdc285",
    "signature": "0x86aa874bf70a5f36d1b3b476a4e25ff88aae9ccc011f43c568ac8e409d8041931604d96d9cb6a1f933434b84d155a4e9bcd19e9010d5b6d910d2ee82bca2302d1b",
    "signer": "0x5D4848bCf5c4abA1a0Fdf2B61408c9e4288aDb0E",
    "userId": "305415280"
  }
}