{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "447289",
    "entityType": "User",
    "nonce": "0xb467507325abfc48ae73a1b4d2dfd4c7a0f67e3254e0c3a48ecee1734a684de0",
    "signature": "0x9a02dbb54b317dbcaa8a97db99a88004e904a45c487d526fa9ed525c29a81933085d1a19e77d377b40af9df6ab2522c31e8042a8c9452a760d1e266890fa3d021b",
    "signer": "0xFA54BdDbc2fd0fA514bA36393EF2F5a80Ee9C49b",
    "userId": "428192787"
  }
}