{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x649f73e7ac637a4fc5a8211ff424dd3a58462b7e233305324379f0813a617a5f",
    "signature": "0x378e477e3a033f4e5b49f8ad5b567b899888b734c8421d65ce86007fd2a97aad1f59d7c6533d125ae1fed28d956bb67b39a0018493d461eb3dba9a74468989a61c",
    "signer": "0x34F50BD1d16FaA0390f6037c86b7D52Ff6629a25",
    "userId": "739630124"
  }
}