{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "175425",
    "entityType": "User",
    "nonce": "0x7187d6894eccd2416eb02eefc0cccf07c3d5af1b02b6df506ea98b4147443af9",
    "signature": "0x30b5bf5352ff042c41773552baf113b3ac7c3e027548a6cec5232708a20079ba4691a13d894fad5ad455fdfcf0b06de8278347ff248116be6e964dbb6077ad5d1c",
    "signer": "0xE7A4a8f1d081B44C96Ed68610B6c3016ce8cD6E0",
    "userId": "464427506"
  }
}