{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "357918",
    "entityType": "User",
    "nonce": "0x5ced47d57c1bbd01fe2baaf2e770068e92f84ec3e0ef36fd2d0a0d7bcf86f268",
    "signature": "0x997a160b2af4d11b5e688b1f86ef6ea5da1722dcee482fadaee315aaa3f4a36a7f674573accea261ece6b9b79fef41cc8d6e93077eb56054130e4e9767c03c411c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}