{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3137",
    "entityType": "User",
    "nonce": "0xd81c791aa62a938e29fc98df81a99644b9bfae20f5dbf77f5dc8db5886997f5e",
    "signature": "0x03e878ead96ca57352727f6e29ca2606fb54c3a1350309b46058f619044fa25d2376fa4df2f16817e5e1be6b7c1dbb501a41b37ddf8214b4f4acef159267a4711b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}