{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x73e317576892a630acfae824f5ebc99cb84850587f5d4cb153a0b3485e45b65d",
    "signature": "0x37e5c546c7ab01d3f7822099048864261c9e714976c53ad4187b435e148645264b3668c21dbaedabf6e6a8d02dd2f93eea04669a25147dd59937c4733e3350651b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}