{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdad538e0360b6dd33ece147f47f65446376136c4a62e63ec25bff804fd9109ea",
    "signature": "0xf4d5b8097e8f0944c584b09ce17b2068537fcaa35155b48d6674f0fab94449c71690b0bd9a484462b5f24960e8068fcde2578dab482cc8e746c60cf9d6ac7c0d1b",
    "signer": "0x4FD7Cf7D634F5F26e577538A55E55eDF91665C01",
    "userId": "106462805"
  }
}