{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355113",
    "entityType": "User",
    "nonce": "0xaff60765ab10c272e2cc6bec73c925f0000ea37c2230c9c1e624661225438f5f",
    "signature": "0xc7522bddaa0f1d3e7958b4d1ab39768ede4c6bf1640785f18ec5d86af73c93b1444fd50bfc2264167f42dba696996b699bd13589b8f9833aa28183ec0239b3a31b",
    "signer": "0x257c9f4A9563d6A4a2bF3be7Da1738e167fcF295",
    "userId": "301719964"
  }
}