{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0xda2daedc808545aaa2e88ca89160e83323173a8d6309f1de9ab495cea6627e3f",
    "signature": "0x10b0c2e1067ef8382d3d0ece46e5dddb5ab90bb1cf6e048eee1f0d1621239d5e75c5da02ef59b3ae199251d78e2ec54890c8b5f4f15c58115eea9905011ba3ad1c",
    "signer": "0xDb76663ADEf809efE2D6914c99E1bf0B5e252F7a",
    "userId": "169901003"
  }
}