{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12477",
    "entityType": "User",
    "nonce": "0xda1b76122066ffc3ba376860593f8bd586306db1678c8a11c4f88a77c4175726",
    "signature": "0x9778f684d4620c896dad575a6687bc43c9a7083359a341af4768a55c220ae45f5236b225dfe1f313e0fd609c7536c9f3dd42270e2094a6c235cc6a26884528a01b",
    "signer": "0xa899e54a1aE2f8D645E14e3E1EBF6398971ece5A",
    "userId": "906687997"
  }
}