{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354535",
    "entityType": "User",
    "nonce": "0xca99ef368dc909ecdc73867550dc2b8bfe00c1f44399e79fa10e5ebb392c218e",
    "signature": "0xf6190c09a0ac31c212153c1bbb2dbb9072085b9d917b86d0b9e37e47172e5732603042979741d880afbf61f515dfc212c7d7b22781fa35b49c4b887faaa396a91c",
    "signer": "0xAfE04b3A47505816aD72A3036422AC553C1dFEc3",
    "userId": "515307498"
  }
}