{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "4138",
    "entityType": "User",
    "nonce": "0x2cd014e7aa8c4c4ffef69b7bd808c1d4994107151704d0227a2aca629735ea37",
    "signature": "0x676882012301893dd2048597c2cad821ef967805584f676881199c0ab912b145198978fafe41721eb975aec642f8935586ecd6def9c09e6fd6629b30e5f568b51b",
    "signer": "0x7eBAab495a64FAea1f04dc59ff804bf939da7B12",
    "userId": "709077025"
  }
}