{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "194819663",
    "entityType": "User",
    "nonce": "0x8bcdacd098176de9f9fcfb3ea15c4897db657b67fcbc22d82aa926d77836e267",
    "signature": "0xb492fcde1b59be2761464a22c9d58e4ab0f9b29f528ef07f34b135d3e515f36709061499e6538d846663d45315f9e8c2062f4a82975537b5493550b6c732d8ce1c",
    "signer": "0x87FC3581f96D45b347BB39E15f25079950C5Cc27",
    "userId": "339826419"
  }
}