{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0x323e5ceb38040da4b9717484842009739be198b84b0b3790db5cfb126f71f564",
    "signature": "0x03b374ac87ab93fac9225fdf2a7f399466e5583e410a8006e9ed8374dc40438e509d41b72e8c74b2f57c076942b5ec2a7459fd8c848d088e9269197c33b199bc1c",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}