{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "540022120",
    "entityType": "User",
    "nonce": "0xe0dcf9233b675b12d5448df8a53815dec7dc0ff2c0fc1b96b1f6c03635448a1b",
    "signature": "0x58b03031298d7e0ebecbf75ad683ef007e3d7328b6a6d2c8a47cae742aad9d9e5a3bf5931b49c30261e1b2f90560c0d8529c6a698cb244ce9ac0abecff617f7a1c",
    "signer": "0x98591a180A20DF036EB2C9D2c24B449E65939Df5",
    "userId": "338604526"
  }
}