{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "257534016",
    "entityType": "User",
    "nonce": "0xa6922792c7dd8960210d2342b7eec175b775e60bcee342b895faba5ce1d3db7c",
    "signature": "0x9ae902e8f7e684c6128892d9ca26a05b1828394db0c0b2a132ba89b16b2d6bfe66ce7695357f4505d389edb0355870ff5d86861dabed2bdba5e53c0c1f368dd81b",
    "signer": "0x45C74e4f36E4e5064C5321eeED3748fD52B04eA8",
    "userId": "133970929"
  }
}