{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454225",
    "entityType": "User",
    "nonce": "0x49b88935e5af65826c0cbdbe83f3f04fc47093b1a9f2cbe0be3322db1464bfec",
    "signature": "0xa85e73abdf518b4c8560c1d3cee4ae27f3021345b4bdc93fe842b64f576467911f9e42c16783c7c0e16edfc0ced39879005501c22ee40ec0b6e86fd8434ad0a61c",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}