{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "318",
    "entityType": "User",
    "nonce": "0x7661676aed44bd8accbe803e4f47cf80330813c5a04de53fbfd99b17b23763c1",
    "signature": "0xbe9ced1b00c4b00da49db379c3bbc95d813e61dda911ff707010d44b84966c034717f95fed94a2a7e5af8ba8c18f29da97073c1093633420e8151f37bf6fa1041b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}