{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "353528",
    "entityType": "User",
    "nonce": "0x13e8c539dbd58010679e386985b88447ddf72f8a6a75cb0ecabe0304132308b3",
    "signature": "0x89b53da52869c271ebffda8a8c19b4236842aedf78e709c920cf280ad282cad7327a6205eefdc7c9b5f04755089caebaecb6bd7a6b462d639ba6ed45aaab465c1b",
    "signer": "0x7451Cf52e883bc4483b88591c194dc3942E7F191",
    "userId": "584186978"
  }
}