{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa6ac49d476537cea2f3e24b224e4f5fce88327236d35033d3d2147868ff58f47",
    "signature": "0x3d6a0206e9f94c90e4e6f1bcca2ac23ba71a602ca2f2caf85d09cf0d779c4fb737d5f6756dfe4ba5a1a3d9c8539bdf37a6ce193f1c50899efd64ddc5f6e776941c",
    "signer": "0x6977C629414250C61f26e10876443Fb6A2138d35",
    "userId": "691688428"
  }
}