{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854614078",
    "entityType": "User",
    "nonce": "0x2de46fad77ee1f7fc985f0d3b8760a36b2304bf7aacced00c4eff958248fd28e",
    "signature": "0x59f6ef9353f8c594f50e6e1dec9b88aa69e132ca13c638ed53bb1aeaebf0d418548fef02775ea8bcdc69cf413d05f44a53d3a12623e0c450dffa539aabb3cb301c",
    "signer": "0xF300c20BDBB459E009c4E55c08CFd33E12f8B0Cb",
    "userId": "782218508"
  }
}