{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190321",
    "entityType": "User",
    "nonce": "0x2012aa45273d3361c179667ac7e7d2048e8f7530cc8465d7ac8c2202e6ec55de",
    "signature": "0x020228ddd12b11f4abf77d5a02b3c89954a1d302d79d77369ce86ec1c74eb639632fc45177a149c6ba52d243d0baee6fca5ab23e06c3bcf013d942642b0981e01b",
    "signer": "0x05aba01c97C4F182D989670622abE9c797782dD2",
    "userId": "508263176"
  }
}