{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xadd7e7a7f2d645d4c2fa2fa307fa32aa9be4821bc140db968e75e25836298ede",
    "signature": "0x3000661e4dc70e8d335e1b1998bf9b95cf6e731b40e69ae0da38acfffde4025462f76291eea826c388c087b787e0847770dc6cb8f7875c637dd54266e616546f1c",
    "signer": "0xaDc551661CaC6d99d7d569b1455A747C5272c418",
    "userId": "213190477"
  }
}