{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4e54fd7997cec3bf47ee5bead531721afcd2ee501d59e53dedb829bc7db6136d",
    "signature": "0xfb540beec8ab8280d998d6508def6918816bc8d4ac4c44dfca2aa1306b06c63f5c036a607adae6f519a56331e430de2a332256fdcf7a7654c3972a57408562491b",
    "signer": "0x6164d22C5753c6E9f1ec157dDef5A3C606E2f10D",
    "userId": "534038283"
  }
}