{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "190872",
    "entityType": "User",
    "nonce": "0x238f0937c405554084e6aeb7e4bff4bda6be3868e630ad9d25d8db139d0f10dc",
    "signature": "0x0ce3fdc3f61cf36ec50f3aefce6979ec42bf4eab3fa63545c699f53ef3b149a93aef814fa5ec025620afd7c45000ef9f35056bed759e7b49bd0ec599daebc7811b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}