{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcbf387ee3f722cc1a6e5b1b8e02b78d1578a42ffbb421e32c914200f7dbeb22e",
    "signature": "0x4b1a8cae86ca9f3749dce7424ba70cc1c57554577c42897fdfc514953f5f6ae156a341c0c4019fc3df0cd3315c785dbbdf0be1dadc04ab582d2f3dc3a9b417241b",
    "signer": "0xb87fFF581cC87c41f5760cBc657a96Fa1C7673E3",
    "userId": "648196771"
  }
}