{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4214",
    "entityType": "User",
    "nonce": "0xb44c0ef5be0e12c95b4ec5897077d1da7aad6b288f18f3cd2789e61473f83168",
    "signature": "0xbf44bf8e7da042d6c8385b067afaa032815d691090b8fcf13c4bf97c65760abb74ff5c61f6d67aed085c3bf13b65795d9212a58a1889c84a8f94a0978bff95ac1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}