{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1646345",
    "entityType": "User",
    "nonce": "0xcf5e7ed8a131b4aff96c9f2f1e07c202f7e085e9f68b32c056344486720bd8fd",
    "signature": "0xac0a0b1e67051700d0e9feaee39ec5e15467bf0d55fc6d5b6ab12f4455455d6756697f3c8524bc1c1b439b47cdb574042cdcfa304f23e739cd83fa7e5f1a60c41b",
    "signer": "0xE0EaB915C3153F4a2DF5C6e7b8D58dAc829Fbf2f",
    "userId": "774741623"
  }
}