{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "648443373",
    "entityType": "User",
    "nonce": "0x0b1854dac1d26868e7fb85483f757134d4202a5540834724a747127a6e3d4218",
    "signature": "0x6077d49e6a4b9c1050d362ebb516de0522979b667036ee461461552a80e469384f8744e483fd15578b51271da8effe9a714bb06e6794fbad049b21a41be067f81c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}