{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "150486",
    "entityType": "User",
    "nonce": "0xa1c4f68878cc669c15502649f950ceaba42ad7e593b3ee3123a60e76e5cfd998",
    "signature": "0xcbfeebdad14c51720d0c8e0edfb183e6e5a7ca4546285714beb900d25b7038ca73c47b010f2607c241c65a7099a2355431f4143ea2226c5f0ec9378437352e1e1b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}