{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x044ed926bfe48a91b9b11f2bde2aba7cd82dd2d4291a76b88f1291180c4d906f",
    "signature": "0x04a7c3af7f3cf33522596cd5735963796ae2edd23f7dc42fd2169aa6baeb99b92962125f185e6bcf947c3ca99e86ccd5ee5632393ec02e7a585b301b2a4b4a361c",
    "signer": "0x1A41243Ac743D6F421B96e0416887A18f5cb61a0",
    "userId": "664264575"
  }
}