{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1b4b76f8c7cca269484675ceb1e985bcb3e854900005ca32ef15878f62b20b6e",
    "signature": "0x0efcff96aea0c123b4673753dd3b5cc78a8991f1e03f4f05260b6c68cc5a4c9c4adcddab200f007f225edd5f037431caae710d4d081bae18bb3e45f6c011c68e1b",
    "signer": "0x2480668A2849AD9Eeef1129d84348cd7073D4Ec7",
    "userId": "887781517"
  }
}