{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc871a0855ca4c8547e1a48bc14cc275e054fa5554f48bf3b2b00aa39ea804cf8",
    "signature": "0x7cc84c1d00985e16229f6cdd43ed068d3a30483ae798424e5d768a3129a2e1ee12f79ea45790a36e4c3fbd60cab1de777fa05b0800320e85de7b8b88fcaeea791b",
    "signer": "0x1F6fD63727526a874dDfD265AD16C1F89B3fAFD6",
    "userId": "660209426"
  }
}