{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x38f0459a967c2106c39729f6f6ec49eb5c348e4bea05ea7e5681474230f87fdd",
    "signature": "0x46ccb1980ac8509317d272b7d681c5444b293548c14938f3548a42a83038977a714ac9928d731e976abbf4c353edcdd64fc6b640ee2ab5478444880bfbd20ef11c",
    "signer": "0x4E6B9e895d4328B1B54C7f3bfe593C72976B9b95",
    "userId": "50459839"
  }
}