{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "138131",
    "entityType": "User",
    "nonce": "0x46bbdf74cabdd705265dc983467a12b51cde01ecc9514455519982e21e468cd8",
    "signature": "0x227f8b5adc335021ac656caee0f3be32f5a5554bc9b84a0703865430282d475f770115ea1ff48920aee9cc2b70a6e5e0fbdf422b892fcfc5ddbbcba81ffd753b1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}