{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "220728",
    "entityType": "User",
    "nonce": "0x4d0d2d06ee74ac87d1eef113da32e6f329177db0b1aad406b0dded7e64d52f53",
    "signature": "0x4eb52dc219dcb70562685b734246b94cb76f4d6ddff687eb858087f91c0b0e5f3f8f70fd8700692c5e1cc4e2f4ec5b523c2de8bfee6cdf36e5fb92a009088ab21b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}