{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "780541024",
    "entityType": "User",
    "nonce": "0x0aefd927f9351ff5bdb630ded11b6d4ec8be5dca9ff5f0e5f355d8276b50e9ac",
    "signature": "0xc08bce60c08e2fa020617a78c793dd65bf8d4e038840b026e67cf599c215de5023dab2b3f757f7c5aa53a9fe06a468988b460f7e6ba44cd8f194cfd33bb13fef1b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}