{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343301",
    "entityType": "User",
    "nonce": "0x23bed85bf4164107f6fca95030338f6aa2894fcb5aaeaad9d4aeceea10e27f40",
    "signature": "0x91b3c197e6fd31651083f2181e44095c699e4b84a6169c02bdfbd7f5813365c924f91d1e6a4a04ce834dc918b7ada7d6b480dee7bb9c14cc653d67477141eaba1b",
    "signer": "0x7E7b9c4DAC3F284d889a5bc274eA80b8BA5F63ee",
    "userId": "670307808"
  }
}