{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "218513",
    "entityType": "User",
    "nonce": "0x88ad8f63a0b69e0303148b6795294e6152400b958e6aa0985f6b2b7574ebf98f",
    "signature": "0xb35dd974fd9456688764fa038f5bcc0a9190e9e07b5bf9160723775e40613d1f4a5490a2e2c863e14b5323b9ca955c193143edd457c814b0e6615a5dde44bb641b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}