{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x87d80d59000261f030c4b309303f0b399f489d45ca7a58d33e32ccc170f48190",
    "signature": "0xef6d6cd0f3dc12af851b94f235109f6ac622c29c5889189c45690e6471d8f5d77541ebe4be9c1d6394cf34396722005f5350e035b988250db90f3ed3079e513d1c",
    "signer": "0x580Aa7c985f7eEbd81267A7D6439f1da105410E8",
    "userId": "756659886"
  }
}