{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "423422344",
    "entityType": "User",
    "nonce": "0x098aa33664cdd5fbf0a16525d998bace61293a0b855ce96f961ba096a067ee6a",
    "signature": "0x6a64f0acbb1f94f6e5751aa26d387e913d377d70b638e186bcc37371b0875c1d1060fdf80b7eb63891d2e2cf1b3a181af35be4974710b6ffc04525322685f76e1b",
    "signer": "0x53f39D73a2dd51E9e8A362EF3b1383072E37cf26",
    "userId": "74209883"
  }
}