{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "980401",
    "entityType": "User",
    "nonce": "0x5e5772ff902905543c08bfeaaa678dd48f53948508185f201648c60fd7a5ed18",
    "signature": "0x4f4131a44b457dc080b30871d51e8e07f8e0a187a23c02d5204d331e2804f16b3ee487bd80bd5f238eeb04a7053a7b8f26a2e83c2b80927d20d1a94c7b5109b41c",
    "signer": "0xE534A1ad2e8E1f616866185D1efDf463B0eD38b4",
    "userId": "353625"
  }
}