{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0da4505bedd2400214291746f07e16fd970d7ca0979df3d71423faf1fe07952a",
    "signature": "0xcdbfc81f3a4bc23bfddd1c370809b1f9397d2445839dc757d558d368514482cd642d0eb959c5f35125d213f53a272aaa1b9367b00e8ccab48ddaeca6cd4060c11b",
    "signer": "0x9acF8CBE8f2B0d51e756C58D6d1f946A8757602F",
    "userId": "428941685"
  }
}