{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2b2f108fc2a0d2b416d4290b11dc9f3b692d7fc607e9f9fd983688ad099d1c4e",
    "signature": "0x887887572c655090bc1c006db65bbd69ad61c110b3ce08faac837aea52b2965c17b9aed055bb8e5362b48b47522edd22e26e533c9814c2bf61dd233f4c25666f1c",
    "signer": "0x89234D73dC288b2dE08BecD5C87648bBEfA3bbD6",
    "userId": "218887895"
  }
}