{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x76fbfa2ec9bae19f4b0fe3353be412e9a7d3403e9388e4c333160d9b0f0e5ee7",
    "signature": "0xdfa152ef60c483fa7d9b7c00de013519ffacbccf030ac3b84e84f8f94067f6d12ab7ea49435521e2886ff322908a37cf6fa3973c55c4f89f2f4c7a7969c4cf721c",
    "signer": "0xE6B24340f3279D03154F1f83D702FD1Bfa2351f0",
    "userId": "507413880"
  }
}