{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xd500721d8673db03a11b4c28fa41eea33e4344d384a0ce758fcaabb0715ce0d1",
    "signature": "0x6806ca5e54fe67e0731591694747a8795d1c9fb825f27b9c504b0d6740cfeacc2f5d4ffd09cbabff4d49e481b8335d50429e7b0e47b7eb4846e3eea0f77542e11b",
    "signer": "0x014bAc1d10CB1E2654FEec2313cB76aDFe41f1Ad",
    "userId": "551705448"
  }
}