{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "323361833",
    "entityType": "User",
    "nonce": "0x7f52b77a51057b32ad3cfbd28a30724dfac8f20eca76270347596d11731002ee",
    "signature": "0x8663c6d93b8c9fffc4dd42af77123b8bbcff1087e920ed3f710e6388baf61a4b2c5de501bd2c4aff4d07beb4bddd8423a1652327c4353791293757b341e0bfe51b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}