{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c3e29acc461387fd5850a3ada9b231dd69227fdb5e9b0e832f62e03505eeeec",
    "signature": "0x36d51594971db0002c7f942580105923e31accc0432e55357ced0a85a401c8f35960301d10b3aeca77939bf0f493c4a53770dd7ea59fea141db627fbc941f1491b",
    "signer": "0x5e726906F4D78E7A3A35216322A456744c5aFC76",
    "userId": "869546451"
  }
}