{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xbae6889f5d8c2c889bcf1ef1f5bb9889a42917dd349983f5e27d02d06a2d8141",
    "signature": "0xb956d7ea50387f056aca9073568b02bd82158217223cb0fcd4bcbd16b3af05a80920a143f3f84da475e2814cf62a6d8773419e90379ef4c9062552cb6b03e7331b",
    "signer": "0x6819a900C419Dc4d11a33a5DAC7d99B2dcD61632",
    "userId": "994645589"
  }
}