{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6743b47bd1c88af055630a85baf724cafc2cac3f8dd55cc6b3cd67813833ff48",
    "signature": "0xd8f06c6c64ce6d8e53b0fbf63e779a331d901a6d673115d5d6a064c08cfac1c564fed78d93540201535758c951a64a521f0fcbb1bab5c90b1c286b38b22221351b",
    "signer": "0x454A4c2a120F0C7Bfd31AC4d019683C00738DBe8",
    "userId": "133629090"
  }
}