{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "577316537",
    "entityType": "User",
    "nonce": "0x5c97eabd2c18e11c271aa888c17629801f8c83000004d39df4431f29e8d7beed",
    "signature": "0x5d3617555cb42f77c50e7bfb3e10fd5fc992bf8c9ab3683ac7344181c9f9c8cd262ba189f8730ec45eed6f3f82b707231467c3fdcc25aacf1790a16f33885a8c1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}