{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "723141",
    "entityType": "User",
    "nonce": "0xaaf2c6b9e8fd7e696d1bb1e2b97d0628db034ea03f4eca63733adffaaf278d40",
    "signature": "0xd2a2d3ee4305b3ea2093f3b7d728fd10de3c8652f28c9d6356430ebd8989a23f7908a345c85801140f344e7e2859c576f413e707bf716614b4f9b945bd65759c1b",
    "signer": "0x6eF66a6206A4589bEd5849d15Bc2746C2603b01f",
    "userId": "989336341"
  }
}