{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf8be5f57fef6175cf4581ee9d0569f42a36c90190de2ae20e633399f35092f4f",
    "signature": "0xac8c587268cdc03572448560a8388157533a08a896f1538af39d77bb44c9e618189e88387fdc7cde30285357d2f1fff3bc9c96f88bf00da56fcbeaa5535f0b651c",
    "signer": "0xe7dEcB818fCe078fcBE1bDD38AfdE42155dd2CF0",
    "userId": "395698740"
  }
}