{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "2",
    "entityType": "User",
    "nonce": "0x8a3127d15e12db03c7683cfbbfd3d4086696bc00c3ddc74b5354f89f0d7a6008",
    "signature": "0x864dd1fb240779dd796ba70dd33becd53522cc2451fde716eb5d7792264766d2154cb4b3d2310c66268d308755f28e025e9296ddcd80e6494c673b0afdb0bdff1c",
    "signer": "0x84B42609E987DD0953e02498E61987fB833B7C92",
    "userId": "887547386"
  }
}