{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4508ead46a97a0fc52b613c3cf6e6d9a3380294b2979b10cd082cea99b52f873",
    "signature": "0x658d2a838db4038a60275da099a607c5b1544b258d301f6af80c4aa8c256172123dbb21db44c3df0b1689dcc42c65cac491a309e7c6c50294565a91699fd92fe1c",
    "signer": "0x595660d1DeD5F240099A44bA7DF765b7a1B974c3",
    "userId": "70211066"
  }
}