{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x93a6295a5c360b1b225061edbb1f6de2ebb869d539e3e7fe2d704875a8dfe665",
    "signature": "0xfc4bc6871e9e0c53f6567eb56518346566497de089de920b97c38192952f7c500a86bcb6419ce2b147375c334d6c46f77beaad5705af643fca16fbeeb4a5deb41c",
    "signer": "0x16f3B4c183488F54B12588D3db1d34C2C1E976a3",
    "userId": "300618925"
  }
}