{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf4cd57e82f01007c1cacc0f2e12712dd543624adcf3eccffd923fda442d6a269",
    "signature": "0x7d0272976f75dfdabe06e1b9115813533926b74c7f5f400fd9a0cc9796baa5681b9e1139204b9c86fafdc1f47d24c83a0567728c0d77cf40f5d4a3600c525ed01b",
    "signer": "0xe5223Dc6E411A24e22DcF917955e97a8D7479d0c",
    "userId": "981716494"
  }
}