{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "61950",
    "entityType": "User",
    "nonce": "0xf7305fd9e856182506b3c821ca3665d151db5741fa4f31d4e66f3f6f9919b5c3",
    "signature": "0xb4f6fd703b4f789518c60999b19e0d2c571f00ddba7aa2fbc9162c4b9b9cca3a0c649ae30b8c3446e2c294a1edd0a8fe218f5d2d17b00603363f4f5f62c27aa81c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}