{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2828db54b2b559d6c2b6ace38ad06a7187b01b196af8e76e26c1255690dad34a",
    "signature": "0xb5531e3c90a523bb0c5d336d01958c5b3902834205306e9a91d4326cbdd4c26b0c79eb90d5878f6d7035031c087c54340ef39c85973c39037eaaf5540cd7af071c",
    "signer": "0x615A557E62EFfD4950805ab48294945D82593241",
    "userId": "974110018"
  }
}