{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "339826419",
    "entityType": "User",
    "nonce": "0x3c0863b89066f1982502710834dd5051d1a097b64e9b3d66bcbe150deff1892f",
    "signature": "0x75b2bdfb50ea9da289b3cc696e07f56314eb8112183836fd3bbe1fba5f4decdb05e461eb29c343bc919d65eef19d69e00c13026ca6425fece71598b4cf03c7021c",
    "signer": "0x6965Aa9ec89F0ab44c5241159D2188d7b83c1D25",
    "userId": "278763919"
  }
}