{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "52643",
    "entityType": "User",
    "nonce": "0x6b08a52f04462aa5af628b1c0ff5a62a6849f5018cbcb9ea999c7ae478547201",
    "signature": "0xa8e138953c33adfe12c8681f95f1fc7e5bfae1581dd4d565535b578b32067d3e369c2274aae82cc35e82051f988fdf32a7bd7aa0679e9c33730ddc23aa048af31b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}