{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9ea6dac210dbaeb590ec827e2f0d16b342acb5e1356edefb1b922da33cb62717",
    "signature": "0xf3da7fce2c93ac3d65b64b0de398bc412d29d1b1dd8d8ac6bfa671d4280cfb512c64822d67d853e5e5429dc61cd4bb8f9bd6d66b6bf355dc56dc0aec02d6c97a1b",
    "signer": "0xc1c2de89cfb24e90Aa087D41D069D2bDf709e6dd",
    "userId": "619668137"
  }
}