{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "489554874",
    "entityType": "User",
    "nonce": "0x42e8829b2fab4e669c6e983065dda953eea1d8dd6575676881392861d0530b9d",
    "signature": "0x0d93ca0e4192666bd5c6405ec9729b8688e3b8a8c1c50a9219ca0d41bca8a5c5470a2c3c22dad6dba5cbc51f6b2abcdedde5b66be18772db12c3ef0f1c0b82a81b",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}