{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb88dab8d2c14a642891a3ebd70d334b64ae8e989222c6b3a23b06b32edec2325",
    "signature": "0xa4cead4043761d3cdc2ca1abee6b9577793cd0069198409fe343b79f47c5da9f77bb5b321431d62bdc7d2a0992f109f751ab8c6ede0bfa4fb649bb426cf20f791b",
    "signer": "0xDB0C3C937F5dAec855a051f9fDA3513b9FdB111c",
    "userId": "154798324"
  }
}