{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x61973421b189ee4931ffc32d0638ded0ffbb7fb825460ca2fd1af45b30aa78a7",
    "signature": "0xa43ad20fd83437c59134a1e921ea5e0f0ce21727362be957c2a5b677217106910ff37c743b6072f044faf0a890bf00277ca884a11a2f4ede2d401787b44f60871c",
    "signer": "0x1694Fab9C5899cCF9Bd095c5091b101286e574E6",
    "userId": "572125140"
  }
}