{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "580576096",
    "entityType": "User",
    "nonce": "0x1c5fbd67734e2378e8eed452606f1258186e8a431edec2fc13c51c7a12a75937",
    "signature": "0x3e5789431c14de5505249dc2fab547f9e2b4b2985e4e626d6635b5ecc2c6e74b59d71a20b5ef5122acd81171389648ae63a97ea10f7aa15bfdbf2146fed8b4311b",
    "signer": "0x6Af6D40d1d0B48D79D2bd3E3c8f0a45540130c0F",
    "userId": "89433"
  }
}