{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "217600",
    "entityType": "User",
    "nonce": "0x3d34815dce8e849ef4dd0317ea7a6b959b11f6d62e4f427412c6dc927eb2754f",
    "signature": "0xde7a50c596a07dc89eef2f486424f53af4334b00e0decb2f58e09ba772e2ac0131be31ce2ad9bae93e0b48386a8a5b33957843345deab7b628317d3379f167e01b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}