{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53021",
    "entityType": "User",
    "nonce": "0xb28867aacd0e289d871d48703bc9fcb0bc6eb284ffcc9fde32876769dd106521",
    "signature": "0xbb2825ce1ebf19767b713c1d83e78b0c499315d6568cabd527e8a79fcfd9bce12bc606a027d0d178bb7893c444ac1d967af21aa0f8d1436e3e3d71a1d76e1c691c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}