{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "388520",
    "entityType": "User",
    "nonce": "0x9d985e604aee74a66b11ae084d03cb5c1cc37c594821c06e9726a74d37ed63a0",
    "signature": "0xa9da7ead6f8eec7a63ed2c49ef1747a3bf39754094adfd1557a759589a8ce7310b86765fb549d72fd6c287c2bd31ffcbd1372b4c0621f198d9bd2207359ba5a01c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}