{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16411799",
    "entityType": "User",
    "nonce": "0x8ce5c3de318ef27e4d585f696a8c61f11b15618b36b86e9e84b3938252063b00",
    "signature": "0xb1f8da732b4753df15f0defc7cb1ec2005077c5db42c7a32f458f0280b97b526107672e8c7963a22f6ee7dece898728d602ef8d7157f489de0bbf85013f646051b",
    "signer": "0xfC070d9d02c152146e3D1B2cD4B03FD7a3CA1AB0",
    "userId": "539537193"
  }
}