{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x37b1610713426308bd3e12509ea0f66e491a8e495894f963712e15f5a1b163fd",
    "signature": "0xc95cb7f41d2f9678ebdcdfa3ede8fcaa6da1f816394d66677e543b6173bda26d540e8be6069a71fcb78701e31f6fc12c3045a35ff58219066ea2d16f69d7f3d71c",
    "signer": "0x49ea1963bD0698Ba4421742478714fbFa38E0719",
    "userId": "189995856"
  }
}