{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "719754",
    "entityType": "User",
    "nonce": "0xb50d52579efb7414528219ad652c892ca0a18348194abd20c90152a1f069c8a4",
    "signature": "0x5500325035804bfc32129425f925b0d27d343a19e4749a8edfc4fd8c31dec2e312f38ff7190f1c1c093c9e17aca74c68e74f0f902dccd34c7370119edbeeb3101c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}